/Engine/Plugins/Runtime/XRBase/Source/XRBase/Public/XRMotionControllerBase.h
Returns a custom names parameter value
The value of the parameter
virtual float GetCustomParameterValue ( const [FName](API\Runtime\Core\UObject\FName) MotionSource, [FName](API\Runtime\Core\UObject\FName) ParameterName, bool & bOutValueFound ) const